Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Illustration of the efficacy size of intervention on stage transitions.
| Stage transition between W2 and W3 (U2)Stage membership at W2 (U1) | Pre-intention | Intention | Action |
|---|---|---|---|
| Pre-intention | b11+g11*Intervention | b21+g21*Intervention | 0 |
| Intention | b12+g12*Intervention | b22+g22*Intervention | 0 |
| Action | 0 | 0 | 0 |
The b parameters are slopes for the multinomial regression of U2 on U1. The g parameters are slopes for the intervention, varying over the U1 and U2 classes.
